On Sat, Oct 29, 2022 at 10:27 AM Brent Meeker <[email protected]> wrote:
> > On 10/28/2022 3:06 PM, Bruce Kellett wrote: > > > Simply saying that QM as traditionally formulated considers measurement >> as a special process that os irreversible, doesn't cut it, because >> measurement is then not treated in terms of the fundamental dynamics of >> the theory, it is put in in an ad hoc way. >> > > Lots of things are put into physics in an ad hoc way. The Born rule is a > prime example -- it is just > imposed on the quantum wave function in an ad hoc way -- it cannot be > derived from the fundamental theory. > > > But by Gleason's theorem it's the only consistent way to put a probability > measure on Hilbert space. > Who said we need a probability measure? That is as ad hoc as anything else; besides, unitary QM does not allow for a probabilistic interpretation. Bruce -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAFxXSLTrNUJ%2BiKcTWEAPXNYZ%2B%3DUoziUm5VsMVbE9Q7sx6zA1tg%40mail.gmail.com.
